bug#22302: 25.1.50; time-stamp ignores time-stamp-time-zone

[Eli Zaretskii]

> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Tue, 12 Jan 2016 12:19:10 -0800
> Cc: 22302-done@debbugs.gnu.org, Harald Hanche-Olsen <hanche@math.ntnu.no>
> 
> I don't know what MS-Windows does with TZ="UTC"

Nothing.  It doesn't understand that.  The MS-Windows time routines
need an explicit offset from UTC to be able to account for the
timezone.  So unless you say UTC-0, nothing will happen.